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- Title
Regioselective and regiospecific reactions of ethyl ortho-(dimethylaminovinylazoloazinylcarboxylates with hydrazine.
- Authors
Didenko, V. V.; Potapov, A. Yu.; Ledeneva, I. V.; Shikhaliev, Kh. S.; Konyushko, O. V.
- Abstract
Selectivity of reactions of ethyl 4-[( E)-2(dimethylamino)vinyl]pyrazolo[5,1- c]-[1,2,4]triazino-3-ylcarboxylates and ethyl 7-[( E)-2-(dimethylamino)vinyl][1,2,4]triazolo[1,5]pyrimidine-6-ylcarboxylates with hydrazine in various solvents was studied. The formation of a pyridone cycle proceeds regiospecifically in dimethyl formamide or dimethyl acetamide. A regioselective cyclization resulting in fused 1,2-diazepines occurs in acetic or propionic acid.
- Subjects
CHEMICAL reactions; RING formation (Chemistry); HYDRAZINE; SOLVENTS; PYRIDONE; ETHANES; AMIDES
- Publication
Russian Journal of General Chemistry, 2010, Vol 80, Issue 4, p814
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363210040225